Study of the catalytic activity of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) on the melanoidin removal by ozonation process

Melanoidin is a compound produced by food industries and distilleries, which has negative impacts on the water environment due to the high content of dissolved organic carbon and dark color. Consequently, this work aims to study the catalytic properties of multilayer graphene (MLG), molybdenum oxide (MoO₂), and manganese ferrite (MnFe₂O₄) in the ozonation process to remove melanoidin from water solution. The results show that the reaction rate constant (k) of the melanoidin decolorization process using catalytic ozonation is 1.7 times higher than the non-catalytic ozonation process. The same results were observed for all catalytic materials with no significant difference among them. On the other hand, MLG was the most efficient catalyst in removing total organic carbon. The removal efficiency was 32% for the non-catalytic ozonation process and 63% for the catalytic ozonation using MLG. This increase in efficiency is attributed to a better production of hydroxyl radicals in the presence of MLG, which was confirmed using isopropanol as a radical scavenger. The efficiencies using MoO₂ and MnFe₂O₄ were were 46% and 51%, respectively. The results show that catalytic ozonation by MLG is a promising treatment for melanoidin removal

Febre Maculosa: Relatos de caso.

Spotted Fever (FM) is a disease caused by gram-negative bacteria of the Rickettsia species, transmitted through the bite of ticks of the Dermacentor variabilis and Dermacentor variabilis andersoni species, usually during the summer months. Thus, the present work aimed to review case reports on Rocky Mountain Spotted Fever, listing the main symptoms found, the most used diagnostic methods and the forms of treatment administered. A literature review was carried out in the PUBMED and Periódico da Capes databases, published from 2018 to 2023. In the analysis of the selected cases, it was found that the main clinical manifestations were fever, rash, myalgia, headache, asthenia, pain abdominal pain, arthralgia, edema and loss of consciousness. Regarding laboratory findings. the results of thrombocytopenia, transaminitis, leukopenia, hyponatremia and leukocytosis deserve to be highlighted. The main diagnostic tests used in the reports studied were indirect immunofluorescence (IFAT), PCR and the Weil-Felix test. In Brazil, the standard treatment is performed with doxycycline, with chloramphenicol used as a second choice and prioritized in severe forms, in which parenteral administration is necessary. In the general context, therapeutic management should be carried out early so that there are greater chances of cure for the patient with a reduction in mortality.A Febre Maculosa (FM) é uma doença causada pela bactéria gram-negativa da espécie Rickettsia, transmitida por meio da picada de carrapatos das espécies Dermacentor variabilis e Dermacentor variabilis andersoni, geralmente durante os meses de verão. Dessa forma, o presente trabalho teve como objetivo fazer uma revisão de relatos de casos sobre a Febre Maculosa, elencando os principais sintomas encontrados, os métodos de diagnósticos mais utilizados e as formas de tratamento administradas. Foi realizada uma revisão de literatura nos bancos de dados da PUBMED e Periódico da Capes, publicados no período de 2018 a 2023. Na análise dos casos selecionados verificou-se que as principais manifestações clínicas foram febre, exantema, mialgia, cefaléia, astenia, dor abdominal, artralgia, edema e a perda de consciência. Em relação aos achados laboratoriais. merecem destaque os resultados de trombocitopenia, transaminite, leucopenia, hiponatremia e leucocitose. Os principais testes de diagnósticos utilizados nos relatos estudados foram a Imunofluorescência indireta (RIFI), o PCR e o teste de Weil-Felix. No Brasil, o tratamento padrão é realizado com a doxiciclina, sendo o cloranfenicol utilizado como segunda escolha e priorizado em formas graves, nas quais a administração parenteral é necessária. No contexto geral, o manejo terapêutico deve ser realizado de forma precoce para que haja maiores chances de cura do paciente com a redução dos quadros de mortalidade

O papel da fisioterapia em pacientes oncológicos

Objetivo: analisar o papel exercido pela fisioterapia em paciente oncológicos.  Métodos: Trata-se de uma revisão integrativa de caráter descritivo e qualitativo, realizada nas bases de dados PubMed (Biblioteca virtual dos Estados Unidos), Phisiotherapy Evidence Database (PEDro), COCHRANE LIBRARY, LILACS (Literatura Latino-Americana e do Caribe em Ciências da Saúde) e SciELO, utilizando os descritores “Physical Therapy”, “Palliative Care”, “Oncology” com o operador booleano “and”. Os critérios de inclusão dos artigos definidos para o presente estudo foram: artigos publicados em inglês, com os resumos disponíveis nas bases de dados selecionadas, no período compreendido de 2018 a 2022. Resultados: Após a leitura e análise completa dos artigos selecionados foram incluídos no estudo 4 artigos relacionados ao papel da fisioterapia no em pacientes oncológicos. Os artigos foram organizados em forma de quadro destacando os objetivos, métodos e principais resultados evidenciados nos estudos, os quais mostraram de modo geral que a fisioterapia no contexto da reabilitação paliativa caracteriza-se por uma abordagem que possibilita promover mais independência ao paciente, maior tempo de vida e por conseguinte, garantir uma rotina de vida mais branda e satisfatória, sendo importante para funcionalidade Conclusão: A fisioterapia no contexto do cuidado com os pacientes oncológicos apresenta um importante papel no seu tratamento, sendo eficaz na atenuação do quadro sintomatológico. Além disso, ressalta-se a utilização de recursos fisioterapêuticos, como os exercícios físicos e a atuação multiprofissional

Fluorescent Markers: Proteins and Nanocrystals

This book chapter will comment on fluorescent reporter proteins and nanocrystals’ applicability as fluorescent markers. Fluorescent reporter proteins in the Drosophila model system offer a degree of specificity that allows monitoring cellular and biochemical phenomena in vivo, such as autophagy, mitophagy, and changes in the redox state of cells. Titanium dioxide (TiO2) nanocrystals (NCs) have several biological applications and emit in the ultraviolet, with doping of europium ions can be visualized in the red luminescence. Therefore, it is possible to monitor nanocrystals in biological systems using different emission channels. CdSe/CdS magic-sized quantum dots (MSQDs) show high luminescence stability in biological systems and can be bioconjugated with biological molecules. Therefore, this chapter will show exciting results of the group using fluorescent proteins and nanocrystals in biological systems

Avaliação da ocupação antrópica em relação à legislação ambiental na macrozona rural do ribeirão João Leite, município de Goiânia – GO

Third Millennium begins with a paradox: from one side there is the apex of technology development and demographic expansion, resulting in a bigger demand of physical space and natural resources to support the progress; from the other side, there is the necessity of protect the cited spaces and natural resources from human actions. For these actions dont provoke itself extinguish. Geotechnology appear like very effective tools to execute control urban and Environment planning. In this context, this work searched development a methodology to analysis of human occupation relationship to Permanent Preservation ares (APP) on study areas, João Leite river basin, locate at Goiânia city. To delimit the APPs was utilized the Digital Basic Urban Maps (MUBDG) cartographic base its owner is Goiânia Government on scale 1:5,000, elaborated for the Citys Planning Secretary, to analysis about grounds use and occupation was utilized ortophoto on scale 1:5,000, obtained by city hall throw aerophotogrammetry survey in 2006. The studies identify the areas in conflict, where the human occupation is in disagreement with norms specified in the effective Environment legislation. According to study result about 15,96% of PPAs are along of water course and 1,38% are mount and mountain roofs. The obtained results demonstrated that 62,3% of PPAs areas is in disagreement with the environmental legislation.Pages: 2967-297

ANÁLISE DE INCERTEZA E MODELAGEM DE QUALIDADE DA ÁGUA DO RIO UBERABA, MINAS GERAIS

O objetivo deste estudo foi avaliar o perfil de oxigênio dissolvido (OD) em um trecho urbano da bacia do Rio Uberaba, identificar as principais fontes poluidoras e sugerir medidas de controle. Para tanto, o estudo foi dividido em cinco fases: (i) avaliação da qualidade da água durante um ano hidrológico; (ii) calibração e validação do modelo de qualidade da água; (iii) análise de sensibilidade dos coeficientes e dos dados de entrada do modelo; (iv) análise de incerteza; e (v) criação de cenários para a tomada de decisão. Os resultados mostraram que o Córrego das Lajes é a principal fonte poluidora do Rio Uberaba. O modelo mostrou‑se confiável, uma vez que ele pôde ser calibrado e validado. Com a análise de incerteza foi possível mostrar que a probabilidade de o Rio Uberaba atender ao padrão ambiental exigido para a classe 2 (OD≥5,0 mg.L‑1) é praticamente nula, mas que ela poderia ser elevada para 75,3% se a carga orgânica lançada no rio fosse removida com uma eficiência de 75%

Prediction of the longitudinal dispersion coefficient for small watercourses

 Longitudinal dispersion coefficient (DL) is considered an essential physical parameter to water quality modeling in rivers. Therefore, the estimation of this parameter with high accuracy guarantees the reliability of the results of a water quality model. In this study, the observed values of longitudinal dispersion coefficient are determined for natural streams (with discharge less than 2.84 m3s-1), based on sets of measured data from stimulus-response tests using sodium chloride as a tracer. Additionally, a semi-empirical equation for prediction of DL is derived using dimensional analysis and multiple linear regression technique. The performance of the produced equation was compared to five empirical prediction equations of DL selected from literature. It presented correlation coefficient r2 = 0.87, suggesting that this equation is suitable for the estimation of DL in streams. It also presented better results for predicting the DL than the five equations from literature, showing an accuracy of 71%.

Reaeration and oxygen dissipation into a circular hydraulic channel: experimental and dimensionless approach

<div><p>ABSTRACT Dissolved oxygen (DO) is a key parameter in water quality. The DO concentration in a water body can be changed by interfacial phenomena such as reaeration and oxygen dissipation, which can be represented by the coefficients K2 and KD, respectively. Few studies have jointly correlated K2 and KD with physical and hydraulic parameters of the channel. The present work investigated the behavior of these coefficients over a range of hydraulic conditions, and developed semi-empirical equations capable of relating both coefficients. Reaeration and DO dissipation tests were conducted in a circular hydraulic channel with flow velocity ranging from 0.20 to 0.79 m.s-1 and depth ranging from 0.09 to 0.15 m. Estimates of K2 and KD were performed using the non-linear regression method. Semi-empirical equations were obtained based on classical dimensional analysis and multiple regression analysis. The comparison between measured and estimated coefficients yielded R2 for reaeration and dissipation of 0.940 and 0.844, respectively. KD was higher than K2 for all turbulence levels applied at the hydraulic channel. An estimate obtained by the relation between the semi-empirical equations indicates that the transfer of oxygen in the water-air direction (dissipation) is approximately twice as fast as the transfer in the air-water direction (reaeration).</p></div